package cn.edu.hqu.cst.android.hxy.e5;

import androidx.appcompat.app.AppCompatActivity;

import android.content.SharedPreferences;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import android.widget.Toast;

public class MainActivity extends AppCompatActivity implements View.OnClickListener {
    public static int MODE = MODE_PRIVATE;
    public static final String PREFERENCE_NAME = "SaveSetting";
    Button btnLogin;
    EditText etAccount, etPassword;
    SharedPreferences sharedPreferences;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        btnLogin = findViewById(R.id.btn_login);
        etAccount = findViewById(R.id.account_input);
        etPassword = findViewById(R.id.password_input);

        // 获取SharedPreferences对象
        sharedPreferences = getSharedPreferences(PREFERENCE_NAME, MODE);

        // 自动填充已保存的账号密码
        String savedAccount = sharedPreferences.getString("account", "");
        String savedPassword = sharedPreferences.getString("password", "");
        etAccount.setText(savedAccount);
        etPassword.setText(savedPassword);

        btnLogin.setOnClickListener(this);
    }

    @Override
    public void onClick(View v) {
        if (v.getId() == R.id.btn_login) {
            String account = etAccount.getText().toString().trim();
            String password = etPassword.getText().toString().trim();

            if (!account.isEmpty() && !password.isEmpty()) {
                // 保存账号密码
                SharedPreferences.Editor editor = sharedPreferences.edit();
                editor.putString("account", account);
                editor.putString("password", password);
                editor.apply(); // 异步提交

                Toast.makeText(this, "登录信息已保存", Toast.LENGTH_SHORT).show();
            } else {
                Toast.makeText(this, "账号或密码不能为空", Toast.LENGTH_SHORT).show();
            }
        }
    }
}
